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ContextDirection

Enum ContextDirection 

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pub enum ContextDirection {
    ActingIn,
    Subtree,
    Any,
}
Expand description

A DID’s authority to confer access through an approval, re-exported from the SDK.

The type lives in vta-sdk because the DIDComm and Trust Task update bodies carry it and must be constructible by clients that never link the server crates. Only the shape is shared — every authorization rule over it (validate_approve_scope_grant below) stays here. Same arrangement as crate::context_path. Which way a context filter reads along the context hierarchy.

A context id names a subtree, so “entries relevant to context X” is two questions, not one, and an answer is only meaningful paired with the direction being asked:

directionquestionpredicate
ActingInwho may act in X?scope is X or an ancestor of it
Subtreewho holds a grant beneath X?scope is X or a descendant of it
Anywhose authority touches X’s subtree?either of the above

Only ActingIn existed until now, and a caller sweeping a subtree to revoke it got back exactly the entries it was not revoking (the ancestors keeping their authority) while every leaf-scoped grant it existed to cut was silently absent — an incomplete answer that looks like a complete one (#822).

ActingIn is the default, so an omitted parameter is today’s behaviour exactly. An unparseable value is refused rather than defaulted: guessing which question an operator meant is how the silent-wrong-answer failure returns.

Variants§

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ActingIn

Entries that may act in the context: scoped to it or to an ancestor of it. The historical (and default) behaviour of ?context=.

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Subtree

Entries holding a grant at or beneath the context. The revocation- sweep and delegation-audit direction.

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Any

The union — every entry whose act authority touches the context’s subtree in either direction. The auditor’s question.

Implementations§

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impl ContextDirection

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pub const ALL: [ContextDirection; 3]

Every direction, in the order the operator-facing help lists them.

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pub fn as_str(&self) -> &'static str

The wire spelling — identical to the serde representation, so the CLI, the query string, and the Trust Task payload cannot drift apart.

Trait Implementations§

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impl Clone for ContextDirection

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fn clone(&self) -> ContextDirection

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Copy for ContextDirection

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impl Debug for ContextDirection

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl Default for ContextDirection

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fn default() -> ContextDirection

Returns the “default value” for a type. Read more
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impl<'de> Deserialize<'de> for ContextDirection

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fn deserialize<__D>( __deserializer: __D, ) -> Result<ContextDirection, <__D as Deserializer<'de>>::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl Display for ContextDirection

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl Eq for ContextDirection

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impl FromStr for ContextDirection

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type Err = String

The associated error which can be returned from parsing.
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fn from_str( s: &str, ) -> Result<ContextDirection, <ContextDirection as FromStr>::Err>

Parses a string s to return a value of this type. Read more
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impl PartialEq for ContextDirection

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fn eq(&self, other: &ContextDirection) -> bool

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more
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impl Serialize for ContextDirection

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fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl StructuralPartialEq for ContextDirection

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impl<T> Any for T
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fn type_id(&self) -> TypeId

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🔬This is a nightly-only experimental API. (clone_to_uninit)
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